下面各题，怎样简便就怎样算．98÷图4×地图÷4r图7÷[(图4-地r)÷79地]79地×9图r+r9地÷图r[999r-（79地-地r）]×9r94．

survivor 英 [səˈvaɪvə(r)] 美 [sərˈvaɪvə(r)]

设A={a，b，c}，A上二元关系R={[ a, a ] , [ a, b ],[ a, c ], [ c, c]} , 则s（R）= 。

diary[ˈdaɪərɪ]

Я работала ______ [每周7天] ______ [从9点到5点].

The 3rd homeworkListen to the following, spell the words in English and translate into Chinese._________________ [ʃeip]• _________________['traiæŋɡl]• ____________[raund]• _______________ ['əuvl]• _______________ [hɑ:t]• _______________ [stɑ:(r)]• _______________ [riŋ]• _______________ [ˈrektæŋɡl]• __________[skweə(r)]• _______________ ['daiəmənd]• _______________ [kju:b]• _______________ [kəʊn]_______________ ['kʌlə(r)]• _______________ [(h)wait] _______________ [blæk]• _______________ ['jeləu] _______________ [ɡri:n]• _______________ [red] _______________ ['silvə(r)]• _______________ ['ɡəuldən] _______________ [piŋk]• _______________ [braun] _______________ [blu:]• _______________ ['pə:pl] _______________ [ɡrei]• _______________ ['aivəri]_______________ [məˈtiəriəl]• _______________ ['leðə(r)] _______________ [klɔθ]• _______________ ['plæstik] _______________ ['rʌbə(r)]• _______________ [ˈmetl] _______________ [wud]_______________ ['tekstʃə(r)]• _______________ [sɔft]• _______________ [hɑ:d]• _______________ ['tendə(r)] _______________ [rʌf]• _______________ [smu:ð] _______________ ['stiki]_______________ [weit ənd ˈvɔlju:m]• _______________ ['sentiˌmi:tə] =(cm)• _______________ ['miliˌmi:tə] =mm• _______________ ['kiləˌmi:tə]=km• _______________ [intʃ] (1 _____ =25.4mm)• _______________ [mail] (1_____=1.609km)• _______________ [ɡræm]=g• _______________ [ˈkiləgræm] =kg.• _______________[paund] (1______=0.4536kg)• _______________ [tʌn]（1______ =1000kg）

设A={1,2,3,4},在A上定义二元关系R: [,] [=]x-y=u-v,证明R是A×A上的等价关系.

与如下代码不等价的语句是( ) <br/>char str&#91; &#93; = "CProgram"; A: char str[9] =<br/>“CProgram”; B: char str[ ] = {'C',<br/>'P', 'r', 'o', 'g', ‘r’, ‘a’, ‘m’,<br/>‘\0’}; C: char str[ ] = {'C',<br/>'P', 'r', 'o', 'g', ‘r’, ‘a’, ‘m’}; D: char str[ ] = {"<br/>CProgram "};

某R进制数(627)R=511,则R=() A: 8 B: 9 C: 12 D: 16

9.&#91;多选&#93;下列短路故障中属于不对称短路的有（ ） A: 9 B: 9 C: 9 D: 9